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Atmosphere
Special Issues
Atmospheric Intraseasonal Oscillations
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Atmospheric Intraseasonal Oscillations

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Meteorology".

Deadline for manuscript submissions: closed (14 July 2022) | Viewed by 3992

Special Issue Editor

Prof. Dr. Lu Wang

E-Mail Website
Guest Editor
School of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing 210044, China
Interests: Madden–Julian Oscillation; intraseasonal variability; atmosphere–ocean interactions; subseasonal weather forecast; scale interactions

Special Issue Information

Dear Colleagues,

Intraseasonal oscillations (ISOs) are widespread in tropical and mid-latitude atmospheres, and exert great influence on global weather and climate. The influential nature of ISOs has been noted on precipitation and temperature variability, as well as the frequency of extreme weather events occurring. ISOs can also interact with synoptic waves, as well as interannual variabilities such as El Niño/southern oscillation (ENSO) and the Indian Ocean Dipole (IOD). Revealing dominant ISO modes that impact a local area and understanding the related physical mechanisms may help in constructing an empirical model for subseasonal or extended weather forecasts, which is crucial for improving weather predictions. Moreover, ISOs and their influence may change under global warming scenarios.

In recognition of the importance of atmospheric ISOs, the open access journal Atmosphere is hosting a Special Issue to showcase the most recent findings related to observational analysis, theoretical understanding, and the modeling, prediction and projection of atmospheric ISOs. Original research papers dealing with any aspects related to atmospheric ISO are all welcome contributions. Review papers are also welcome.

Prof. Dr. Lu Wang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • intraseasonal oscillation
  • scale interaction
  • S2S prediction
  • extreme weather event
  • MJO teleconnection

Published Papers (2 papers)

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Research

19 pages, 9099 KiB  
Article
The 1–31-Day Predictions of the South China Sea Summer Monsoon in the CAMS-CSM Climate Forecast System
by Xin Wang, Yi Fan, Lijuan Wang and Yan Zhu
Atmosphere 2022, 13(7), 1051; https://doi.org/10.3390/atmos13071051 - 30 Jun 2022
Cited by 1 | Viewed by 1664
Abstract
The South China Sea summer monsoon (SCSSM) is crucial for the East Asian monsoon system, which has been detected from plenty of aspects, while its prediction has been relatively less investigated on the subseasonal timescale. The 1–31-day predictions of SCSSM, including fundamental dynamic [...] Read more.
The South China Sea summer monsoon (SCSSM) is crucial for the East Asian monsoon system, which has been detected from plenty of aspects, while its prediction has been relatively less investigated on the subseasonal timescale. The 1–31-day predictions of SCSSM, including fundamental dynamic and thermodynamic characteristics, indices, onset date and associated circulations, are examined and diagnosed for different climate systems, i.e., T106 and T106 × T255 (with a nudging process added) in the Chinese Academy of Meteorological Sciences climate system model (CAMS-CSM). The results indicate the general decreasing prediction skills of the model with the growing lead times. For lead times of 1–10 days, zonal winds at the lower (850 hPa) and higher (200 hPa) levels can be reasonably predicted, as well as the pseudo-equivalent potential temperatures at 850 hPa. Meanwhile, the prediction skill for the higher level generally shows a better performance than that for the lower level. The prediction capability is relatively weak during the circulation adjustment period before the monsoon onset, while a significant enhancement occurs after that. During the analyzed period of 2011–2020, the prediction of SCSSM onset date is mainly skillful in most years, while the year of 2015 shows a prediction result with at least six pentads earlier than the observation, which is subsequently taken as a failure case for further investigation. At the lower level, the model could not effectively predict the weakening and eastward withdrawal of the Western Pacific subtropical high and the shift in wind field during the SCSSM onset. As for the upper level, the rapid northward movement of the South Asia high and its establishment in the Indochina Peninsula are neither well captured. In addition, the models of T106 and T106 × T255 do not show significant differences in most cases, but the latter tends to be more skillful on the continent. Full article
(This article belongs to the Special Issue Atmospheric Intraseasonal Oscillations)
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12 pages, 3690 KiB  
Article
The Zonal Wind Intraseasonal Oscillation in the Exit Region of the East Asian Subtropical Westerly Jet in Winter and Its Thermodynamic Mechanism
by Suxiang Yao and Yishan Liu
Atmosphere 2022, 13(3), 395; https://doi.org/10.3390/atmos13030395 - 27 Feb 2022
Cited by 1 | Viewed by 1869
Abstract
The six-hourly ERA-interim reanalysis data were used to analyze the intraseasonal oscillation (ISO) characteristics of the zonal wind in the exit region of the East Asian subtropical westerly jet (EAJ) during the winter (November to April). The results indicate that from East Asia [...] Read more.
The six-hourly ERA-interim reanalysis data were used to analyze the intraseasonal oscillation (ISO) characteristics of the zonal wind in the exit region of the East Asian subtropical westerly jet (EAJ) during the winter (November to April). The results indicate that from East Asia to the North Pacific, the zonal wind in the upper troposphere shows significant 10–40-day oscillations, propagating eastward toward the jet exit region. The strength of the intraseasonal zonal wind anomaly increases from the lower troposphere to the upper troposphere, reaching a peak between 300 and 200 hPa. The zonal wind ISO in the jet exit area is closely related to the intraseasonal inverse temperature tendency between the north and south of the jet exit in the troposphere. In the acceleration (deceleration) phase of the intraseasonal west wind, the air temperature decreases (increases) in the north of the exit and increases (decreases) in the south of the exit. The intraseasonal temperature tendency is stronger in the north of the EAJ exit than that in the south. In the north of the EAJ exit, the intraseasonal temperature tendency is decided by the temperature advection, where the whole troposphere is controlled by the north wind in the west wind acceleration phase and controlled by the south wind in the west wind deceleration phase, so the intensity of temperature advection is strong. However, adiabatic heating plays a decisive role in affecting the temperature evolution in the south of the jet exit area, and the intraseasonal meridional wind is the opposite between the mid-upper troposphere and the lower troposphere, resulting in weak temperature advection and the weak temperature tendency. Therefore, although the zonal wind ISO in the jet exit area is the result of the joint action of the ISOs in different latitudes, the influence of mid-high latitudes is particularly important. Full article
(This article belongs to the Special Issue Atmospheric Intraseasonal Oscillations)
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